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X3 Ce On 1.6 , Pin Voltage Problem


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#1 brit2k

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Posted 13 March 2005 - 05:52 PM

Hey,

Im having trouble with wiring. Here's my pin values on the 1.6 with the pinheader installed and all wires installed.

1 1.63v
2 ground
3 n/a
4 n/a
5 3.27v
6 n/a Alt 5v wire installed correctly with 4.98v
7 3.33v
8 3.33v
9. nothing Being told it's VVC3 should be 3.33v but there is no trace lead coming off the pin header so im not sure where the 3.33v would come from

10 3.33v
11 3.33v
12 ground
13 3.33v
14. 3.33v
15 3.33v

Since there doesnt seem to be anything coming from pin 9 can I grab the 3.33v from a different pin. When the X3 is installed I only get the 5v LED lighting up on the chip. It's missing the 3.3v which must be from the pin 9 because all my other values are correct.

#2 brit2k

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Posted 13 March 2005 - 06:06 PM

I kept checking my soldering job and I found the trace that comes off of pin 9 on the top of the board and im not getting the 3.33v from the source. I just bought the xbox refurbished a few days ago. I know it's a 1.6 board and without the chip the box works great. So it's not a cold solder joint or anything to do with the soldering, Im just not getting anything from the source of pin 9. Has anyone had this problem before?

#3 brit2k

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Posted 13 March 2005 - 06:54 PM

When the X3 CE is plugged in pin 9 should get power from pin 15 because they run together. I think it might be a bad chip. When the X3 is unplugged I get the values in the ost above but with the chip installed and I try to read the values I only get 5v on one pin and the rest nothing. Im running out of ideas but maybe its a defective x3. Does anyone have any kind of input because im really frustrated. Thanks

#4 sn0wy

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Posted 13 March 2005 - 08:16 PM

When I installed my X3 CE chip on a 1.6 board I had the same problem, but you can run a wire from the 9 pin to a spot on the board, I posted a topic like this, look for threads started by me (there aren't many) someone posted a pic on how to get around the problem by soldring in the wire to the source.

user posted image

Edited by sn0wy, 13 March 2005 - 08:25 PM.


#5 brit2k

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Posted 13 March 2005 - 08:25 PM

Appreciate the info, Thought I was the only one having a problem with this.


#6 acemilo

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Posted 14 March 2005 - 04:32 AM

You don't need the 3.3v line on the rebuild because xecuter chips use 5v, which is whey you need the alt 5v source.

#7 sn0wy

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Posted 14 March 2005 - 06:00 AM

[quote=acemilo,Mar 13 2005, 07:38 PM]
You don't need the 3.3v line on the rebuild because xecuter chips use 5v, which is whey you need the alt 5v source.

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[/quote/]
They also use the 3.3v, obtain a chip and notice there is two power lights, one reads 3.3v, and the other 5

#8 mcw

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Posted 14 March 2005 - 10:28 AM

QUOTE(brit2k @ Mar 13 2005, 07:58 AM)
15    3.33v

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That's all that matters.. if Pin 15 has 3.3V, then it should work... Pin 9 and 15 are LINKED on the X3 chips... Follow the trace on top of the chip and you'll see....

#9 acemilo

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Posted 14 March 2005 - 11:02 PM

[quote=sn0wy,Mar 14 2005, 05:06 AM]
[quote=acemilo,Mar 13 2005, 07:38 PM]
You don't need the 3.3v line on the rebuild because xecuter chips use 5v, which is whey you need the alt 5v source.

View Post

[/quote/]
They also use the 3.3v, obtain a chip and notice there is two power lights, one reads 3.3v, and the other 5

View Post

[/quote]

user posted image

Notice that there is no wire for the 3.3v source. Like I said, xecuter chips don't use 3.3v from that pin for their power, they use 5v for the main power, which is whey you need to pull pin 6 and use the alt 5v.




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